Just to add, mine took 10 days from start to finish. It was quick to work up the doily but I could have made something much bigger if using a dk yarn iykwim. I don't mean it took months to make one (after re-reading my post I thought I might have given that impression)

Well doilies are no more difficult than any other crocheted item. The stitches are the same. It's just much thinner thread and hook and so it feels like it's taking much, much longer to make. I made one which you can see here and I like it but I'm not sure I have the patience to make more because I keep thinking that with dk yarn I could have made a blanket in the same time!